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Catalogue 769 MVF covering high vacuum feedthrough assemblies mounted on miniflanges. CVC Scientific Products Ltd News and Information Letter: concerned chiefly with vacuum deposition systems. Hick Hargreaves and Co Ltd Liquid-ring pumps and compressors for process and chemical plants : CHR series, SHR series high vacuum and SHR series medium vacuum-three catalogues. Hydrogen in Metals Proceedings of the 2nd International Congress, Paris (June 1977) 10 volumes, Pergamon Press. Leybold-Heraeus GmbH & Co. Ltd New Publication : Roots vacuum-pump systems. Materials Research Co Ltd 'High purity metals and ceramics' Spd 15 (1976). C. A. Norgren Ltd Brochure : Correct selection of compressed air processing equipment'. Oriel Scientific Ltd (United Kingdom) News-letter 'Spectrum', dealing with new lasers and laser components in the vacuum-uv, uv, visible and ir.
๐ SIMILAR VOLUMES
It is found that the least upper bound to the pressure in a vacuum system with a virtual leak is Qo/(etoS), Where Qo (torr. I) is the quantity of gas trapped at t = O, e = 2.718, to(S) is the time from the start of the pumpdown and S (I/s) is the real pumping speed.